Hemstitch attachment for sewing-machines



(No Model.)

I G. W. BAKER. HEM STITCH ATTACHMENT FOE SEWING MACHINES.

No. 261,421. 7 7 Patented July 18, 1882 M m'vENTo ORNEYS- s, PETERQ.mwum mm Wuhing'an. r c

UNITED STATES PATENT OFFICE.

GEORGE W. BAKER, OF CLEVELAND, OHIO.

SPECIFICATION formingpart of letters Patent No. 261,421, dated July 18,1882. Application filed May 5, 1882. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. BAKER, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Hemstitching Devices; andI do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

My invention relates to sewing-machine attachments, and moreparticularly to an attachmentfor producing whatis known asthehemstitch,(shown in Figure5 ofthe drawings;) and it consists in thepeculiar construction of the same, as will be hereinafter set forth andclaimed.

- In the drawings, Fig. 1 is a view in elevation of my device, showingit attached to a sewing-machine, and the position it occupies when theneedle is down. Fig. 2 is also a view in elevation of my device attachedto a sewing-machine, showing its position when the needle is raised.Fig. 3 showsmy device in position just before the needle-bar enters thegoods, and Fig.4 shows it after the needle has entered the goods. Fig. 5is a plan view of two pieces of goods connected by means of thehemstitch.

A is a bracket or arm which is secured to and extends out from thepresserfoot B. Pivotally secured to this bracket or arm A is ahook-shaped piece, 0, the lower end orlooper, a, of which is adapted tooccupy a position just ahead of the needle D,"and preferably between theneedle D and presser-foot B, as shown in Figs. 1 and 4, the presser-footbeing cut away, as shown more plainly in Fig. 2, to allow the end a toenter.

Extending upward from the free end of the piece G is an arm, E, which isprovided at its upper end with a hook or lug, b, with which the setscrewc engages, as shown in Fig. 2, and acts, as the needle is being raised,to pull the looper an outward and upward, as shown.

F is a spring, which rests on the upper side of the piece 0, and acts,when the needle is lowered, to cause the looper a to again resume theposition shown in Figs. 1, 3, and 4.

The operation of my device is as follows: Two pieces of goods, at and e,between which it is desired to form the hemstitch, are placed eachother. The presser-foot B is then lowered and the machine set in motion.Now, as the needle is descendingand before it has entered the cloth, thespringF causes the looper a of the piece 0 to occupy the position shownin Fig. 3, in the rear of the thread, so that after the needle hasentered the cloth, as shown in Figs. 1 and 4, a loop, f, is formed. Theupward motion of the needle-bar causes the setscrew 0 to engage with theupper portion of the arm E, which acts to release the loopf from thelooper a. The foregoing operation is repeated at every up and downmotion of the needle, thus forming loops or loose stitches, which, whenthe pieces of goods (I and e are folded on themselves, as shown in Fig.5, are drawn out and form the hemstitch.

I have described one manner of operating my device and causing thelooper a, in conjunction with the needle, to form a loop; but anymechanism which will cause the end a to reciprocate, and thus form theloop, may be used.

. In order to adapt the end or looper ato form a longer or shorter loop,I provide a means of raising and lowering the said end. One manneris-shown in Fig. 3, which consists in forming the looper separate fromthe piece 0 and adjustably securing it to said piece by means of aset-screw, g, and a slot, h.

7 What I claim is- 1. The combination, with the needle and needle-bar ofa sewing-machine, of an arm, A, a piece, G,-pivoted thereto, andprovided with ahook, a,and means, substantially as described, forreciprocating said hook.

2. The combination, with the needle and needle-bar of a sewing-machine,of the arm A, set-screw 0, spring F, and pivoted piece G, having theloopera and lug b, substantially as set forth.

3. The combination, with the piece (3, of the adjustable end piece orlooper, a, substantially as set forth.

In testimony whereof Ihave signed my name to this specification in thepresence of two sub scribing witnesses.

GEORGE W. BAKER. Witnesses:

F. M. SANDERSON,

R. F. OURTI's's.

i under the needle with their right sides facing

